Experiments on film rupture commonly involve spherical bubbles formed from a reservoir [1]}, [2]}, [3]} or vertical films [4]}, [5]}. However, as evaporation effects are more pronounced for dense colloidal suspensions, the reservoir setup is not convenient for colloidal films. Therefore, in our experiments, we form flat horizontal films by introducing a constant volume of fluid onto a custom film stretcher inspired by past experiments with bacterial films [6]}.
